If you had read well the Joy of Satan you would probably ended up here to ask, instead, how the meditation works, what could you expect to happen now, what you should do to spiritually advance etc.
Because almost everyone I know, me too, didn't know -at first- if JoS was true, if Satan was good for real, if meditations were true, if Gods were good and real etc. That's because some of us come from a xianity (et similia) background and that's normal to wonder and ask these questions.
But to find out if all of this is real you have to open your mind while reading the Joy of Satan website, that's what I did and while I was reading I felt an inner strength like I was doing the right thing. Like I was reading the Truth.
Three of my friends felt the same while reading the JoS website. It was like a new reality fell upon us suddenly. When we finished reading each page of it, we did the dedication ritual.
You can't expect Satan showing up to prove it's all real. My advice is to read and study very well the JoS website. It helped me a lot and it's still helping me.
http://www.angelfire.com/empire/serpentis666/HOME.html
Try this too:
http://see_the_truth.webs.com//index.htm
Hail Satan!
Hail Anubi!
88!